General

  • Target

    6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e

  • Size

    1.9MB

  • Sample

    240527-1lra2scc37

  • MD5

    d99dd53856f53be0f4bba64928e68f7d

  • SHA1

    cc40af39068479199202606b8eb3c1b234192a69

  • SHA256

    6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e

  • SHA512

    10c10a0c28fe112ae7c000079de7981f8d3f9ecb9ac4668ca692d73dda4e8ebfde711ed5a3ea69f1a55aa1c49028faa1dec50c240c409c971da4a5d7270379e5

  • SSDEEP

    49152:CdKfTn6vmJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e

    • Size

      1.9MB

    • MD5

      d99dd53856f53be0f4bba64928e68f7d

    • SHA1

      cc40af39068479199202606b8eb3c1b234192a69

    • SHA256

      6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e

    • SHA512

      10c10a0c28fe112ae7c000079de7981f8d3f9ecb9ac4668ca692d73dda4e8ebfde711ed5a3ea69f1a55aa1c49028faa1dec50c240c409c971da4a5d7270379e5

    • SSDEEP

      49152:CdKfTn6vmJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks